Acetylene-gas generator.



m4853346. Y PATENTED Mnl/1,1907.

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AGETYL'ENE GAS GENERATOR, Ammon-Ion FFFFFF 0m21.190s.

i RATRNTRD MAY 14, 19o?. P. R; STOVER. AoRTYLRN-R GAS GRNRRATQR.A'APPLICATION FILED 001227. .1906.

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F. E. STOVER.

, AUBTYLENB 'GAS GENERATOR.

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6281i tame/o PATENTED-MAY 1 4,- 1907.

UmTnD IsTAfi ns PATENT OFFICE.

FRANK E. STOVER, OF CHATTANOOGA, TENNESSEE, ASSIGNOR TO THE G. R. LYNCHMANUFACTURING COMPANY, OF CHATTANOOGA, TENNESSEE,

A CORPORATION OF TENNESSEE.

ACETYLENE-GAS GENERATOR.

Specification of Letters Patent.

Patented May 14, 1907.

Application filed October 27, 1906. Serial No. 340,855.

To (1J/ wil/0711, ir Tita/y concern/.-

Be it known that I, FRANK E. STOVER, a citizen of the UnitedStates,residing at Chattanooga, in the county of Hamilton, State of Tennessee,have invented new and useful lmprovements in Acetylene-Gas Generators,of which the following is a specification.

My invention relates to improvements in acetylene gas generators of thattype wherein the carbid is automatically fed into a saturating chamberin small graduated quantities, and has for its obiects certainimprovements in the construction of the same as will be hereinafter morespecifically pointed out and claimed, reference being had to theaccompanying drawings, in which:

Figure 1 is a perspective view of the generator, the parts being shownin operative position for generating gas. Fig. 2 is a central verticalsectional view of the same, on a slightly smaller scale. Fig. 3 is ahorizontal sectional view taken on the line 3 3, Fig. 2, the gas bellbeing removed. Fig. 4 is a vertical elevation of the upper portion ofthe de-vv vice, the gas bell being removed, and the casing being shownin section. Figs. 5, 6, 6a and 7 are detail views of the operation ofthe venting lever and the mechanism for feeding the carbid. Fig. 8 is anenlarged detail vertical sectional view of the carbid chamber, taken ata right angle to Fig. 2. Fig. 9 is a detail perspective view of thelatch for holding the carbid valve rod against operationI when thecarbid chamber cover is removed.

Fig. 10 is a horizontal sectional view taken on the line 10-10, Fig. 2,the sludge agitator handle being shown in full lines. Fig. 11 is adetail sectional view of the purifying and safety blow-off chambers.Fig. 12 is an enlarged top plan view of the cup valve controlling theingress and venting of gas to and from the gas bell. Fig. 13 is avertical sectional view of the same.

Similar numerals of reference denote corresponding parts'in the severalviews.

In the said drawings the reference numeral 1 denotes the outer casing,at the top of which on one side is located a funnel spout 2 for fillingthe same with water. Said casing is divided into an upper or gas chamberand a lower or generating chamber by a partition 3, formed into acentral neck 4L, open at its top for the reception of the removablecarbid chamber 5, hereinafter described. At one side said partition 3 isextended into a narrow upwardly projecting chamber 6, best seen in Figs.2 and 3, into the top of which is tapped a pipe 7, the same projectingupwardly into the gas chamber and being open at top and bottom for thepurpose of affording communication between the gas and generatingchambers. Encircling said pipe and resting on the chamber 6 is a cupvalve 8, the

Vsame extending for some distance above the upper end of pipe 7 and, asshown in detail in Figs.,12 and 13, being extended at one side at itstop and formed into a downwardly extending leg 9 provided withdiagonallyarranged apertures 10 for the escape of the gas. Surroundingsaid valve 8 is a casing 11 closed at its bottom, slotted at 12 toreceive the leg 9, and having an outer extension 13 surrounding saidleg, said extension being open at top and bottom, all for a purposehereinafter to be described. I v

An annular gas bell or holder 15 is located in the upper or gas chamber,the same resting, when in its lowermost position, on ycleats l16, andbeing centrally open to accommodate the vertical neck 4 receiving thecarbid chamber 5, as shown. Extending around within said bell 15, exceptwhere the inlet fr pipe 8 and its parts come, is a horizontal partition177 the same being for the purpose of .diminishing the air space in saidbell.

At one side the space above said partition is tapped by a tube 18extending almost to the bottomof the bell, whose function is to drainoff from said space any water that may leak thereinto, owing todefective manufacture.

The casing 1 has located on one side of the lower or generating chambera box 419, in which is located a vertical partition 20, open at itsbottom, and forming, in conjunction with opening 21 in the casing and apipe 22 located in said box, open at top and bottom, and tapped throughthe bottom wall of said pocket, a water-sealed overflow to limit thewater level in the lower or generating chamber, as will be readilyunderstood.

Tapped through the side of the casing 1 is the gas delivery pipe 23, thesame terminating at its inner end within and near the upper 'end of thegas bell 15 and extending out- IOO through which the gas passes upwardlyand into the service pipe 25. Also tapped through the side of casing 1and also terminating within and near the upper end of the gas bell 15 isa blow-ott pipe 26, the same being surrounded by a tube 27 dependingfrom the inner surface of the gas bell 15, said tube 27 serving as awater seal therefor under normal conditions. Said blow-oil pipe 26 isconnected to the blow-oil main 28 hereinafter to be described.

The carbid chamber 5, which is provided with a cover 29 projecting intothe water in the upper chamber between gas bell 15 and central neck 4,thus 'forming a water seal, has its bottom funnelshaped at 30, saidfunnel terminating into a downwardly projecting tubular extension 31.Mounted on a crossbar 32 fixed in the extreme bottom of carbid chamber 5is a circular disk 33, upon which normally rests a sleeve valve 34,carrying an agitator 34a, said sleeve valve extending upwardly, when inits lowerinost position, i'ar enough to still encircle the extension 31.A bracket 35 i'ixed to one side of said valve 34 has connected thereto avalve rod 36, which extends upwardly in a4 groove 36a formed in one sideof the carbid chamber 5, and terminates in an eye or loop 37 at itsupper end that projects horizontally through a vertical slot 38 in thecentral neck 4.. Pivoted to normally swing out of the slot 38 is a latch39 that in its free position has its bottom 40 overlying the eye orlooio 37, so as to prevent upward movement of the latter, but which,when contacted with by the carbid chamber cover 29, is forced inward onits pivot to the position shown in dotted lines in Fig. 8, which carriesits bottom out of the path of travel oi' said eye or loop 37, therebypermitting the valve rod 36 to be operated. A shield 41 iixed within theupper end of carbid chamber 5 aords a space tree from the carbid withinwhich said latch 39 may swing. On the carbid chamber 5 above the latch39 is formed a projecting lug 42, filling transversely the space in slot38, while one side of said slot 38 opposite to the eye or loop 37 isout-turned at 43, for a purpose hereinafter to be described. The eye orloop 37 of valve rod 36 is normally engaged by the bent upper end of arod 44 that extends downwardly outside the neck 4, and is at its lowerend connected with a lever 45 pivoted intermediate its length upon lugs46 rising from the partition 3. In order to provide a wide pivotalbearing for said lever, the same is composed of two bent arms boltedtogether, shown in detail in Fig. 3, whereby lateral movement of thesame is e'liieetually prevented. Connected to the other end of lever 45is an operating rod 47 that extends above the outer casing 1, and nearits upper end is bent or formed into a notch having a horizontal bottomportion 48 and an inclined extension 49 thereof, said. rod being alsoformed at its upper end into a hook 5t). A lug 5l projecting Afrom thesido ol" the gas bell 5 is adapted to engage said notch or ,hook in a.manner hereinafter to be described.

Mounted on the upper edge olI easing l in proximity to the operating rod47 is a U- shaped bracket 52 having pivoted therein at 53 a dependinghook 5-1-,astnp-pin 55 serving to limit the movement of said hook in onedirection. Also pivoted at 56 to the side oll casing 1 is abell-cranklever 57, thesame having its horizontal arm counterweighted at. 58tonormally'retain it in the position shown in Fig. l. rl`he vertical armot said lever 57 is bent horizontally at 571l to projeet over the upperedge of the casing l, and is then extended vertically again, saidvertieal portion being inclined or cam-shajwd at 59. An aperture isprovided in the horizontal portion 57 of said lever, through whiehl'reely passes the rod 47, said lever thus operating to carry with itthe rod 47 when moved on its pivot 56. The blow-oilI main 28 extendsdownwardly on the outside el" easing l, and at its lower end istappedinto box 19, whieh latter freely communicates with the interior oi thegenerator chamber, through opening 28u as seen in Fig. 4. A vent valve(it) in said vent main 28 is controlled by a lever 6l ha ving aprojecting inner end 62, adaj'ited, when` saidlever is turned to thehorizontal position, to contact with a lug 63 on the horizontal arm oibell-erank lever 57. thus tilting the vertical arm thereo'l to thele'l't beneath bracket 52. 'lhe vent main 28 is bram-hed above the ventvalve 6() and one braneh extendsdownwardly to where it is connected at.64 with vent pipe 26, and is also eonneeted with a vent pipe 65communieating with the interior ol a vent chamber 66, shown in det ailin Fig. ll. Said vent ehamber eomimmicates with purifying chamber 2-1-through pipe 67, which projects downward therein for about six inchesbelow the water level therein. Also passing through the bottom of saidvent chamber is a lilling pipe 68, the same extending upwardly thereinto the desired water level, and outside said ehamber also extendingupwardly, as shown, and enlarged at its open end into a illing l'unnel.

Projecting trom the top o'l` l'unnel spout 2 is one end ol' an operatingrod 69 l'er the eup valve 8, the same extendingl'reely into the gaschamber, beneath gas bell l5 and thenee upward into the leg 9 olI eupvalve 8, l'or a. purpose hereinafter deseribed.

Projecting through the vent section olI box 19 is a pipe 70, the samebeing elosed at its top, which closure terms a pivot. lor an operatingrod 71 provided with a handle 72. Said rod extends downwardly in saidpipe and from thence herizontally in the generating chamber, and at itsinner end is turned down to loosely engage between the parallel arms 74-of a sludge agitator. Said arms are spaced apart and bolted at theirends to an agitating bar 75, bent at its middle to fit the configurationof the bottom of the generating cham ber (best seen in Figs. 2 and 10),said generator bottom being concaved toward its center, and beingprovided on one side with a' narrow trough 76, at the outer end of whichis located the sludge valve 77. Said bar 75 is pivoted at its center onbolt 78, which extends upwardly and passes through a filling or spacingblock 79 located between the arms 74.

The sludge valve 77 is provided with an operating lever S0, to which ispivotally connected the lower end of a rod 31 that extends upwardly andis bent at its upper end to partially encircle the stem of the ventvalve between the same and its operating lever 61. Fixed to the side ofsaid lever 61. is a plate 32 having a projecting lug 83 which, when saidlever is turned up to the position shown in Fig. 1, engages over thebent upper end of rod S1 and prevents upward movement thereof, butwhich, when said lever is turned down to a horizontal position, permitsa free upward movement to said rod 31, the latter, when moved upward, onthe other hand, locking said lever in its horizontal position.

From the above description the operation of my im roved constructionwill be understood as ollows: With the lever 61 turned up in theposition shown in Fig. 1, in which position the vent valve 60 is closed,and with the gas bell 15 empty, the latter will rest on the lugs 16 inits lowermost position., thus bringing the lug 51 on said gas bell belowthe notch in the rod 47, said rod bei:` g constantly forced to the rightagainst lug 51 by the upper end of lever 57. Now, by reciprocating rod47 vertically by hand a feedof carbid is effected, as hereinafterdescribed, and the gas bell as it 'fills with the gas so generated willrise until the lug 51 thereon engages in the notch in rod 47, whereuponthe feed will become automatic, as hereinafter described. As will beseen from Figs. 2 and 4, a vertical movement of rod 47 will, throughlever 45 and rods 44 and 36, impart a corresponding movement to thevalve 34. Referring more particularly to Figs. 2 aid S, the operation ofthe feed of the carbid will be readily understood, for, as the rod 36 islifted, the cupshaped valve 34 will be correspondingly lifted from thedisk 33, which normally closes its lower end, thus effecting aninstantaneous feed of carbid annularly around the edge of said disk, theagitator 34a in the upward movement of the valve 34 eifectuallypreventing any clogging of the carbid in eXtension 31. Normally thevalve 34 is in its lowermost position, from which it is lifted by thedownward movement of lug 51 on gas bell 15, which, by pressing down uponthe horizontal portion 48 of the notch in rod 47,

the apparatus.

raises said' valve 34 to effect a feed. Upon the consequent upwardmovement of the gas bell 15, due to the gas generated Yby said feed, theinclined portion 49 of the notch in rod 47 will usually offer sufficientresistance to the lug 51 to cause rod 47 to ascend, thus closing valve34. But, ifthe lug 51 should leave the notch, and the valve 34 shouldnot close downwardly of its own weight, and carbid should continue to befed, the gas bell 15, by continuing to rise, would finally cause lug 51to Contact with the hook 50 at the upper end of rod 47 and thereby forcevalve '34 to the closing position.

When it is desired to remove the carbid chamber 5 from the` apparatus,the same is lifted slightly until the lug 42 thereon clears the slot 38ain the central neck 4, when, by turning said carbid bodily to the left,said lug 42 will engage over the top'edge of the central neck 4 on thatside, thus supporting said carbid chamber in its raised position. Now,it will be observed, from Fig. 4, that, when said carbid chamber is inits lower most position, the lug 42, substantially filling the slot 38,prevents any lateral movement of said carbid chamber, and the out-turnededge 43 of the central neck 4 will act as a stop to prevent thedisengagement of the upper bent end of rod 44 from the eye or loop 37.But, when said carbid chamber is lifted and turned to the left, as abovedescribed, the eye or loop 37 is carri ed a corresponding distance tothe left,which will leave Aroom between said eye or loop and theout-turned edge 43 suliicient to disengage rod 44 from said eye or loop,and the carbid chamber 5, together with its valve and attachedparts, maybe vremoved from Furthermore, the cover 29 being necessarily removedwhen this takes lace, the latch 39, by engaging the eye or oop 37, willprevent any possible operation of the valve 34, so that, even should thecarbid chamber contain carbid, no feed of the same can result.

Water is supplied to both the upper and lower chambers of the apparatusthrough funnel spout 2, the same iirst filling the upper chamber to thelevel of the opeinngs 14 in pipe 11, the surplus passing throughsaidopenings and building up therein and in cup valve 8 until it overflowsthrough gas pi e 7 into the lower or generating chamber, wli it willfill to the level of the upper end of overflow pipe 22, which willco'itrol the water level in said chamber, a discharge from said pipe 22indicating that the apparatus is fully charged withwater.

When it is desired to vent the apparatus to atmosphere, the lever 61will be brought to the horizontal position, shown in dotted lines inFig. 2, which will open vent valve 60, thus, through the branch of ventmain 23 communicating with the generating chamber, immediately ventingsaid chamber.

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The gas bell 15, however, is unaffected b y this action and may continueto supply gas to the service pipe 25, though, when it is also desired tovent said gas bell, the same may be instantly accomplished by liftingrod 69 which will lift cup vlalve S so that the wall 12 of leg 9 thereofwill be raised above the water level, thereby permitting the return ofthe gas in the gas bell 15 to the generating chamber through pipe 7, andits consequent escape to atmosphere through vent main 28.

The operation of the cup valve S will be apparent, the lower edge of leg9 thereoic being normally immersed a short distance in the water in theupper chamber, the gas from the generating chamber forcing the waterlevel in leg 9 downward until it can escape through openings 10 and outthrough extension 13, which latter will prevent splashing.

The movement of the lever 61 to the horizontal or venting positionthrough the engagement of its inner end 62 with the lug 63 on bell-cranklever 57 will lift the horizontal arm of the latter, thereby throwingits vertical arm to the left beneath bracket 52, as

shown in Figs. 6 and 7, the same carrying with it rod 47, which removesthe latter from its engagement with lug 51 on gas bell 15. Said rod 47in falling into bracket 52 will strike the pivoted hook 54 therein, andii" the notch in said rod is above said hook the latter, by itsengagement beneath said notch, will efiectually lock said rod and thevalve 34 against movement. It the lever 61 should be turned to thehorizontal position while the notch in rod 47 was below the hook 54, thelatter, by yielding, would permit said rod to move upward until saidhook engaged beneath said notch. Should the carbid chamber becomeemptied and the gas continue to be used 'from gas bell 15, the latter,by descending and carrying with it the rod 47, would force valve 34upward against the lower edge of the funnel-shaped bottom 30 of thecarbid chamber 5, thus possibly break- -ing said valve or some of theparts. This danger is electually prevented by the incline 59 on theupper end of the vertical arm of bell-crank lever 57, with which the lug51 willA contact, thus forcing the vertical arm of said lever 57 to theleft, the same carrying with it the rod 47 and thus disengaging lug 51from the notch in said rod and permitting the valve 34 to closedownwardly by gravity.

So long as the lever 61 vis in the vertical position, whereby the ventvalve `60 is closed, the lug 83 on said lever, by engaging the bentupper end of sludge valve rod 81, will eliectually prevent upwardmovement of the latter,lthereby locking the sludge valve 77 closed. But`when said lever is turned to the horizontal position, thus venting thegenerating chamber, the lug 83 will be moved out of the path of the rodS1 and the latter may be raised, thus opening the sludge valve 77through lever 86. llui, when said rod is raised and said sludge valve isthus opened, the upper straight part ol said rod will interfere with themovement ol" the lever 61 to the vertical position, by reason of thecontact with said rod ol the lug S3 on-said lever. ln this manner, whenthe vent valve 60 is closed, the sludge valve 77 is locked againstopening, though said vent valve may be opened when the vent valve isopened, the sludge valve may be opened; and, when said sludge valve isopened, the vent valve cannot be closed.

The operation of the sludge agitator is best seen in Fig. 10, wherein apartial rotation of handle 72 causes its operating rod 7l to assume theposition shown in dotted lilies, thus causing a complete half rotationelIv the parallel arms 74, which carry with them` the bent agitating bar75, the lattei` thus sweeping over the entire bottom area olI thegenerator and carrying the sludge into the trough 76, Afrom whence itdischarged by the water through the sludge valve 77.

The gas inthe bell 15, when desired l'or use, is led through pipe 23`into the lower end of purifying chamber 24, from whence it passes,through the purifying material, such as cotton, therein up f'ardly andout through service pipe 25. Should the pressure ol gas in 'chamber 24become excessive, the. same will force down the column of water in pipe67, thereby permitting the excess pressure to escape into chamber 66,and thence out through vent pipe 65 to the vent main 2S. Any excess ofgas pressure in chalnber 66 beyond the capacity of vent pipe 65 torelieve will blow out the water in blow-oil' pipe 66 and escapeherethrouglu this construction permitting the blow-oil' olt the water inpipe 6h' only, thus always leaving sullicient water in chamber 66 toseal the lower end oll pipe 67.

that l consider to be an imiiiortant point in my present construction isthe location ol' the carbid. valve operating mechanism in th(` upper orgas chamber, instead of in the lower or generating chamber, saidmechanism being at the same time water sealed, lior it is well knownthat, when located in the generating chamber, as heretrsiliorc, saidmechanism quickly becomes covered and clogged with the sludge. By mypresent construction the valve operating n'iechanism, althoughell'eetually water sealed, is located entirely within the upper or gaschamber, into which no sludge can penetrate, and thus remains at alltimes free from obstruction or clogging.

It will be observed that l. have dispensed with a lock for thc carbidchamber cover 2E), the same being found in this construction to beunnecessary, lior, when said cover is in position and the vent valve 66closed, the atmospheric pressure on top of said cover will ellectuallyprevent its being lil'ted, though,

carbid chamber.

when said vent valve 60 is opened, and the l generating chamber therebyvented, the pressures on the upper and under sides of cover 29 will beinstantly equalized, thereby permitting the ready removal of said cover.

By referring toIiig. 1 it will be observed that the purifying chamber 24is fixed to the side of the casing 1 in such manner that said casingforms one side or wall of the same, the result being that the gas in itspassage through said purifying chamber is still subjected to some extentto the cooling action of the water in the apparatus through the contactof the water with the inside of the casing.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. In a-generator, the combination with a generating chamber, a gaschamber lying above said generating chamber, a carbid chambercommunicating with the generating chamber, and a valve for controllingthe feed of carbid from said carbid chamber, of operatinv1 mechanism forsaid valve leading upward from said valve, thence downward and watersealed in the gas chamber, and thence to the exterior of said aschamber.

2. In a generator, t e combination with a gas chamber, a carbid chamber,and a feed valve in the lower end thereof, of a valve rod thereforleading upwardly therefrom, a rod connected to the upper end of saidvalve rod and leading downward exterior to said carbid chamber in saidgas chamber, a lever pivoted in said gas chamber below the water levelthereof and connected at one end-to said rod, and an operating rodconnected to the other end of said lever and extending out of said gaschamber.

3. In a generator, a carbid chamber, a cover for said chamber removableindependent of the movement of the other parts, a valve controlling thedischarge yof carbid from said carbid chamber, and means forautomatically locking said valve in its closed position as said cover isremoved from said 4. In a generator, a `carbid chamber, a removablecover for said chamber, a feed valve, and means released by the removalof said cover for automatically locking said valve in its closedposition.

5. In a generator, a carbid chamber, a .removable cover for saidchamber, a valvecontrolling the discharge of carbid from said carbidchamber, operating mechanism for said valve extending upwardly withinsaid carbid chamber, and a latch pivoted in said carbid chamber forengaging said valve operating mechanism to retain said valve closed,said latch being forced out of its engaging position by the carbidchamber cover whenthe latter is placed in position on said carbid.chamber.

6. In a generator, a removable carbid chamber, a valve removable withsaid carbid chamber forcontrolling the discharge of carbid from saidcarbid chamber, a valve rod extending upwardly from said valve, and

connections exterior to said carbid chamber for operating said rod andvalve, said connections being detachably connected with said valve rod,but being locked against detachment by the location of said carbidchamber in its operative position in said generator.

7. In a generator, a generating chamber, a neck leading into saidgenerating chamber and slotted at its up er end at one side, a carbidchamber removab y fitting within and supported by said neck, a lug onsaid carbid chamber adapted to fit within saidvslot in said neck and toprevent lateral movement of said carbid chamber in said neck when the4former is in its lowermost position, and also adapted, when said carbidchamber is raised slightly 'and rotated to one side, to support saidcarbid chamber in said raised position, a valve lfor said carbidchamber, a valve rod extending upwardly therefrom and projected throughthe slot in the neck, operative connections detachably engaged with theprojecting upper end of said valve rod, and a stop on said neck adaptedto retain said valve rod and its connections in engagement except whensaid carbid chamber is lifted and supported by said lug.

8, In a generator, a carbid chamber, a feed valve therefor, a valve rodextending upwardly therefrom outside of said carbid chamber, and agroove in said chamber within which said valve rod extends.

9. In a generator, acarbid chamber, a cover therefor, a valve therefor,a valve rod extending upwardly therefrom within said cover, a latch forengaging said valve rod when said cover is removed, and a shield forsaid latch within the carbid chamber.

10. In a generator, a carbid chamber, a contracted tubular discharge forthe same, a disk fixed in said chamber a little below said tubulardischarge, a sleeve valve encircling and movable vertically on saidtubular discharge and, when in closed position, filling the spacebetween the latter and the underlying disk, an extension from said valveto one side, `a valve rod connected to said extension and extendingupwardly exterior to said carbid chamber, and operative connections forsaid valve rod exterior to said carbid chamber.

11. In a generator, a generating chamber, a gas chamber at a higherlevel than said generating chamber, a gas bell water sealed in said gaschamber, a pipe leading from said generating chamber into said gas bell,and a vertically movable valve for said pipe within said gas bellembodying a down-turned leg normally water sealed, and an upwardextension around said leg.

12. In a generator, a generator chamber, a

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gas chamber at a higher level than said generating chamber, a gas bellwater sealed in said gas chamber, a pipe leading from said generatingchamber into'said gas bell, a vertically movable cup valve for said pipewithin said gas bell; n ormall7 water sealed therein, and an operatingrod for said valve extending from within the same downwardly in the gaschamber and thence through a to be operated independentlyT oi" the otherparts ot the apparatus.

13. In a generator, a vent valve, a lever vfor operating the saine, atlush out, a rod tor controlling said Hush out having its upper end bentto engage said vent valve lever when said Hush ont is closed, and meanson said vent valve lever for retaining said rod against motion While thevent valve is closed.

14. In a generator, a vent valve, a lever for operating the same, aiiush out, a rod tor controlling said iiush out having its upper endbent to'engage said vent valve lever when said lush out is closed, andmeans on said vent valve lever co-operating with said rod for retainingsaid rod against motion while the vent valve is closed and for retainingsaid vent valve open while said 'flush out is open.

15. In a generator, a vent valve, a lever for operating the same, a iushout, a rod tor controlling said flush out having its upper end leent toengage said vent valve lever when said 'Hush out is closed. and a lug onsaid vent valve lever co-operating with said rod tor retaining said rodagainst motion while the vent valve is closed and for retaining saidvent valve open while said tlush out is open.

16. In a generator, a gas bell, a carbid chamber, a valve forcontrolling the feed from said chamber, mechanism for operating saidvalve through the movement-ot said gas bell, means for throwing saidvalve operating mechanism out ot operative relation with respect to saidgas bell, and means .tor locking said mechanism against a Jfeedingmovement when so thrown out of operative relation.

17. In a generator, a carbid chamber, a valve controlling the feed fromthe same, an

operating rod for said valve, a gas bell, a lug on said gas bell foroperating said rod, means vfor controlling the position of said rod withrespect to said lug, and means for locking said rod. against feedingmovement when disengaged Yfrom said lug.

18. In a generator, a carbid chamber, a valve controlling the feed fromthe same, an operating rod tor said valve having a shoulder thereon, agas bell, a lug on said gas bell for operating said rod, means forcontrolling the position of 4said rod with respect to said lug., and ahook for engaging the shoulder on said rod when disengaged `from l saidlug to retain said rod against l'eoding movement. i

19. In a generator, a carbid chamber, a valve controlling the leed fromthe same, an operating rod tor said valve having a shoulder thereon, agas bell, a lug on said gas bell for operating said rod, means l'orcontrolling the position of said rod with respect to said A lug, andapivoted hook l'or engaging the water seal to the exterior, said rodadapted shoulder on said rod when disengaged t'rom said lug to retainsaid rod against l'eeding movement. i

20. In a generator, a carbid chamber, a valve controlling the l'eedt'rom the same, an operating rod tor said valve I'ormed with a notchhaving a horizontal bottom portion, and an incline above said bottomportion, a gas bell, and a lug on said gas bell tor engaging said notchto depress said rod and to aid in raising the same.

21. In a generator, a carbid chamber, a valve controlling the teed fromthe same, an operating rod tor said valve having a shoulder thereon, agas bell, a lug on said gas bell for engaging said shoulder to operatesaid rod, and means tor automatically disengaging said lug and rod uponan abnormal drop oll said gas bell.

22. In a generator, a carbid chamber, a valve controlling the teed l'romthe same an operating rod for said valve having a shoulder thereon, agas bell, a lug on said g: s bell 'tor engaging said shoulder to operatesaid rod, a pivoted lever loosel v engaging said rod to control itsposition laterall}v and having an inclined upper end lving in the pathof movement ot said lug with which the latter contacts on an abnormaldownward movement ot the gas bell, whereb)Y said lever and operating rodare moved laterall \v to dise engage said rod and lug.

23. In a generator, a carbid chamber, a valve controlling the teed tromthe same, an operating rod tor said valve, a gas bell, a lug on said gasbell Vtor engaging said rod to operate the same, a vent falve, a leveroperating said vent valve, and a bell-crank lever looselyv engaging saidoperating rod at its upper end and normalhv lorcing said rod intooperative relation with said gas bell lug, said vent valve lever, whenturned to ventV the apparatus, engaging and tilting said hellcrank leverso as to carry said valve operating rod away from its engagement withthe gas bell lug.

In testimony whereof, I have hereunto set mv hand in the presence ot twosubscribing witnesses.

FRANK lil. {ItlYlClt Titnesses I D. Il. lAiNs, ANDREW M. (.Lintvrniciis.

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